Little known Probolsky Research (data released 4/23; 900 CA registered voters) finds Sen. Dianne Feinstein (D) falling into a closer June 5th jungle primary vote with former state Senate President Kevin de Leon (D-Los Angeles). The survey shows Sen. Feinstein commanding only a 38-27% lead over de Leon within the multi-candidate field.

A potential inaccuracy occurs, however, among Republican voters who appear headed to de Leon in stronger numbers than Sen. Feinstein. While it is possible that this is a function of the veteran Senator being negatively perceived among voters in the opposite party, it is strange to see them going in higher numbers for the more liberal candidate. Additionally, for a five-term incumbent Senator to be only scoring 38% preference in an open primary poll also raises accuracy questions. Previous polling has posted Sen. Feinstein to leads over de Leon of at least 26 percentage points.